Caffeine? Seriously? The most addictive widely used drug in existence? Ok Nicotine is up there too but i doubt someone's going to smoke a carton of cigarettes in an hour. Perhaps if you drink gallons of coffee or soda maybe but your teeth will probably fall out before then. And while I'm sure you could OD on Caffeine why would you want to? Unless you dont want to sleep for 3 days but if there is one thing I can say for certain is that CTB by Caffeine is probably as reliable as Hanging yourself with a pair of earbuds bought from the dollar store, you know the ones that break after 10 minutes of use, or that break just from opening the package. But seriously no ...just no, but if you really think you can pull it off it's your decision, it's just that you're likely going to regret making such a choice that's all.